[ogsa-wg] Glossary terms for Thursday's call

[Treadwell, Jem]

Hi,

Thanks to all those who joined today's call for the glossary segment -
we had an excellent discussion that resulted in agreement on definitions
for state, resource and service.

The agreed-upon definitions (with some minor post-meeting wordsmithing)
are below - please take a look, and let me know if you have any
comments.  I'll move them into the draft document if there are no
objections by Monday - after that you can still comment at any time, and
there will, of course, be a review period for the full document later.

Thanks!

-          Jem

-           

State: An entity's state is the combined values of its "interesting"
attributes.  Interesting attributes are those for which external
observers may see changes over time.  Examples include the position of a
switch, the price of a stock, or the amount of memory allocated to a
process. 

Since not all attributes may be available or interesting to all possible
observers, different observers may have different views of the state of
an entity at a given time.

A change in state is an event.

Resource: A resource is a physical or logical entity that supports use
or operation of a computing application or environment.

In a Grid context the term encompasses entities that provide a
capability or capacity (e.g., servers, networks, disks, memory,
applications, databases, IP addresses, and software licenses).  Dynamic
entities such as processes, print jobs, database query results and
virtual organizations may also be represented and handled as resources.

Service: A service in the most general sense is an entity, usually
composed of one or more software components, that provides functionality
in response to client requests. 

A service is often a part of a service-oriented architecture, and
participates in realizing one or more capabilities.

For example, an electronic bookstore application is a service, and its
database component provides a database service to the bookstore.  Thus
high-level services may be decomposed into lower-level constituent
services.  In general, a service and all of its decomposable
sub-services are considered to be components.

 

Jem Treadwell 
Software Engineer 

HP Software
856.638.6021 office | 856.638.6190 fax | jem.treadwell at hp.com
6000 Irwin Road | Mount Laurel | NJ 08054
www.hp.com/go/software 

  <http://www.hp.com/go/software> 

________________________________

From: ogsa-wg-bounces at ogf.org [mailto:ogsa-wg-bounces at ogf.org] On Behalf
Of Treadwell, Jem
Sent: Wednesday, April 11, 2007 11:50 AM
To: ogsa-wg
Subject: [ogsa-wg] Glossary terms for Thursday's call

 

HI,

I've uploaded version 4 of the glossary - this version includes the
changes for deployment and provisioning, as agreed at the last
discussion.  You'll find it at http://tinyurl.com/2mo6r3.

For Thursday's call I propose to discuss the following terms, as time
permits

o     State.  We had discussed this, and Jay has an action to improve
the current proposal.  So far I haven't had a proposal from Jay, but we
need to put this one to bed, so we'll have a brief discussion and if we
don't have a better proposal at the meeting I'll go with what we have.
There will be an opportunity to improve this or any term in the final
review.

o     Resource, Grid component, and Service.  We had definitions for
Resource and Service in both the OGSA and the EGA glossaries, so we need
to produce a consolidated definition.  Grid component comes from the EGA
glossary.  I've condensed it from the original, but (hopefully) haven't
changed its meaning.

Rather than reproduce these terms here please take a look at the
working/discussion document, which you'll find at 
http://tinyurl.com/23a6zd.  These are the first four terms listed, and
the text you'll find is a starting point for discussion. If you have
comments and you're not going to make tomorrow's meeting, please pass
them on to me; otherwise I'll follow up after the meeting with revised
text for review.

Thanks!

- Jem

 

 

Jem Treadwell 
Software Engineer 

HP Software
856.638.6021 office | 856.638.6190 fax | jem.treadwell at hp.com
6000 Irwin Road | Mount Laurel | NJ 08054
www.hp.com/go/software 

 <http://www.hp.com/go/software> 

 

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